CVE-2019-6596
First published: Mon Mar 11 2019(Updated: )
In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, 12.1.0-12.1.3.6, 11.6.1-11.6.3.2, or 11.5.1-11.5.8, when processing fragmented ClientHello messages in a DTLS session TMM may corrupt memory eventually leading to a crash. Only systems offering DTLS connections via APM are impacted.
Credit: f5sirt@f5.com f5sirt@f5.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| F5 Access Policy Manager | >=11.5.1<=11.5.8 | |
| F5 Access Policy Manager | >=11.6.1<=11.6.3 | |
| F5 Access Policy Manager | >=12.1.0<=12.1.3 | |
| F5 Access Policy Manager | >=13.0.0<=13.1.1 | |
| F5 Access Policy Manager | =14.0.0 |
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Frequently Asked Questions
What is the severity of CVE-2019-6596?
CVE-2019-6596 is considered a medium severity vulnerability due to its potential to cause crashes in affected systems.
How do I fix CVE-2019-6596?
To fix CVE-2019-6596, upgrade your F5 BIG-IP Access Policy Manager to a non-impacted version.
What systems are affected by CVE-2019-6596?
CVE-2019-6596 affects F5 BIG-IP Access Policy Manager versions 11.5.1 to 14.0.0.
What impact does CVE-2019-6596 have on DTLS connections?
CVE-2019-6596 can lead to memory corruption and potentially a crash when processing fragmented ClientHello messages in DTLS sessions.
Is there a workaround for CVE-2019-6596 until a fix is applied?
Currently, there are no documented workarounds for CVE-2019-6596, so updating is the recommended action.
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- vendor/f5
- canonical/f5 access policy manager
- version/f5 access policy manager/11.5.1
- version/f5 access policy manager/11.5.8
- version/f5 access policy manager/11.6.1
- version/f5 access policy manager/11.6.3
- version/f5 access policy manager/12.1.0
- version/f5 access policy manager/12.1.3
- version/f5 access policy manager/13.0.0
- version/f5 access policy manager/13.1.1
- version/f5 access policy manager/14.0.0